**** network

I am using the Honor 400pro 5g phone, and I CANT PICK UP 5G in cape town but yet your couverage map says their is 5G available, when i use vodacom or telkom 5g in my phone then i pick up 5g, i went to the store and was told i will need a sim swap then it will work. I therfor proceeded with an Esim in my device and then a Sim swap but still their is nothing. When i go to jhb i have 5G but cape town nothing how is this possible.